From 16ee7441f40a71872f8fb6a89da470564e76ce04 Mon Sep 17 00:00:00 2001
From: Saumit Dinesan <justsaumit@protonmail.com>
Date: Sat, 15 Jul 2023 15:49:24 +0530
Subject: nvim: Adding autocompletions- nvim-cmp+luasnip+nvim-lsp+cmdline+path

---
 .config/nvim/lua/justsaumit/cmp-config.lua | 88 ++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 .config/nvim/lua/justsaumit/cmp-config.lua

(limited to '.config/nvim/lua/justsaumit/cmp-config.lua')

diff --git a/.config/nvim/lua/justsaumit/cmp-config.lua b/.config/nvim/lua/justsaumit/cmp-config.lua
new file mode 100644
index 0000000..7e29155
--- /dev/null
+++ b/.config/nvim/lua/justsaumit/cmp-config.lua
@@ -0,0 +1,88 @@
+vim.g.completeopt="menu,menuone,noselect,noinsert"
+
+local has_words_before = function()
+  unpack = unpack or table.unpack
+  local line, col = unpack(vim.api.nvim_win_get_cursor(0))
+  return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
+end
+
+local luasnip = require("luasnip")
+local cmp = require'cmp'
+
+cmp.setup({
+  snippet = {
+    -- REQUIRED - you must specify a snippet engine
+    expand = function(args)
+      -- require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
+      luasnip.lsp_expand(args.body)
+    end,
+  },
+  window = {
+    -- completion = cmp.config.window.bordered(),
+    -- documentation = cmp.config.window.bordered(),
+  },
+  mapping = cmp.mapping.preset.insert({
+    ['<C-b>'] = cmp.mapping.scroll_docs(-4),
+    ['<C-f>'] = cmp.mapping.scroll_docs(4),
+    ['<C-Space>'] = cmp.mapping.complete(),
+    ['<C-e>'] = cmp.mapping.abort(),
+    ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
+    ["<Tab>"] = cmp.mapping(function(fallback)
+      if cmp.visible() then
+        cmp.select_next_item()
+      -- You could replace the expand_or_jumpable() calls with expand_or_locally_jumpable()
+      -- they way you will only jump inside the snippet region
+      elseif luasnip.expand_or_jumpable() then
+        luasnip.expand_or_jump()
+      elseif has_words_before() then
+        cmp.complete()
+      else
+        fallback()
+      end
+    end, { "i", "s" }),
+
+    ["<S-Tab>"] = cmp.mapping(function(fallback)
+      if cmp.visible() then
+        cmp.select_prev_item()
+      elseif luasnip.jumpable(-1) then
+        luasnip.jump(-1)
+      else
+        fallback()
+      end
+    end, { "i", "s" }),
+  }),
+  sources = cmp.config.sources({
+    { name = 'nvim_lsp' },
+    { name = 'luasnip' }, -- For luasnip users.
+    { name = 'buffer' },
+    { name = 'path' },
+    }),
+})
+
+-- Set configuration for specific filetype.
+cmp.setup.filetype('gitcommit', {
+  sources = cmp.config.sources({
+    { name = 'git' }, -- You can specify the `git` source if [you were installed it](https://github.com/petertriho/cmp-git).
+  }, {
+    { name = 'buffer' },
+  })
+})
+
+-- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
+cmp.setup.cmdline({ '/', '?' }, {
+  mapping = cmp.mapping.preset.cmdline(),
+  sources = {
+    { name = 'buffer' }
+  }
+})
+
+-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
+cmp.setup.cmdline(':', {
+  mapping = cmp.mapping.preset.cmdline(),
+  sources = cmp.config.sources({
+    { name = 'path' }
+  }, {
+    { name = 'cmdline' }
+  })
+})
+
-- 
cgit v1.2.3